CN104975866A - Automatic watering device adopting infrared absorption type dust concentration detection and acoustoelectric signal triggering - Google Patents
Automatic watering device adopting infrared absorption type dust concentration detection and acoustoelectric signal triggering Download PDFInfo
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- CN104975866A CN104975866A CN201410140325.XA CN201410140325A CN104975866A CN 104975866 A CN104975866 A CN 104975866A CN 201410140325 A CN201410140325 A CN 201410140325A CN 104975866 A CN104975866 A CN 104975866A
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- dust concentration
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- watering
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Abstract
The invention provides an automatic watering device adopting infrared absorption type dust concentration detection and acoustoelectric signal triggering. The automatic watering device comprises an intrinsically safe power supply, an electromagnetic valve power supply, a single chip microcomputer and a test control infrared absorption type concentration and acoustoelectric signal circuit, and belongs to a coal mine automatic watering device. The infrared absorption type dust concentration detection circuit consists of an infrared LED (Light Emitting Diode), an optical transistor 3DU5112D and a transistor 9013; the output current of the 3D512D is in inverse proportion change along with the dust concentration; a voltage signal Uc is formed; an acoustoelectric signal circuit is formed by connecting a resistor in series with an electret microphone and a voltage comparator LM2903; an acoustoelectric signal Us is output; the single chip microcomputer test and control circuit consists of a single chip microcomputer, the LM2903, an optical coupler 2501, a resistor and 2501-IRF9630; the 2501-IRF9630 controls the electromagnetic valve power supply; the Uc performs resistance voltage division comparison with a resistor Rp-R1-R2 through the 3903; the concentration is divided into three stages (high, medium and low); 3 or 2 or 1 min watering is controlled to be performed in a 5 min period by the single chip microcomputer; the Us triggers the single chip microcomputer; and the watering is carried out for 3 min when the sound exists; the single chip microcomputer controls the IRF9630 to be conducted/shut off to control the watering/stopping. An electric circuit is arranged in a phi127 welding pipe casing to become an integral automatic watering device, and relevant requirements of GB3836 are met.
Description
Technical field
This patent relates to the automatic water system that a kind of infrared absorption type monitors dust concentration, acoustoelectric signal triggers.It, according to the dust concentration of monitoring, is classified as Different periods watering dust extinguishing; Also can trigger timing watering dust extinguishing by the sound signal of telecommunication, be the new equipment of colliery watering dust extinguishing.
Technical background
During the operation of underground coal mine getting working face, a large amount of dust can be produced; Mining conveying tunnel, when train by time also can evoke dust, for avoiding dust harzard miner healthy, or causing the great mine disaster of coal-dust explosion, needing watering dust extinguishing.Past, colliery watering dust extinguishing device: is atomizer, the long stream of watering; Two is automatic water systems that fine powder dust concentration controls, and cost is high.This new type auto watering device, with LM2903 voltage comparator to dust concentration classification, single-chip microcomputer-programming Control, can basic, normal, high by dust concentration, and timing is sprinkled water 1min, 2min, 3min in 5min period distances; Under acoustoelectric signal triggers, watering 3min; Its dust concentration classification can be regulated by user, and in the cycle, the watering time can be adjusted by software, realizes Self-watering, and device flexibly, reliable, cost is low, and water saving more than 60%, effectively go out dirt.
Summary of the invention
The mining automatic water system that the object of this patent is to provide a kind of infrared absorption type Sensor monitoring dust concentration, acoustoelectric signal triggers, has Self-watering, saves water and energy, dirt function of effectively going out.
The object of this patent is achieved through the following technical solutions:
The mining automatic water system that infrared absorption type monitors dust concentration, acoustoelectric signal triggers, is characterized in that comprising:
Intrinsic safe power circuit, for infrared absorption type concentration sensor and acoustoelectric signal provide power supply;
Infrared absorption type monitoring concentration circuit, be made up of infrared LED, photistor 3DU512D-transistor 9013, according to youth Bai Beier rule: 3DU512D series loop Δ I electric current and concentration c are inverse ratio, series loop voltage U c=Δ I*R can monitor dust concentration, and produces the dense concentration signal Uc of dust; The acoustoelectric signal circuit be made up of resistance electret capacitance Mike, voltage comparator LM2903, when having a sound, Mike's dividing potential drop raises, and accesses LM2903 by capacitance-resistance, and LM2903 exports acoustoelectric signal Us.
Electromagnetic valve electric power loop, for watering 2W-200-20 type electromagnetic valve provides power supply; According to electromagnetic valve work characteristics, electric power loop serial connection electromagnetic valve magnet excitation control loop: when starting to connect electromagnetic valve, power supply full voltage starts for electromagnetic valve, when electromagnetic valve need maintain unlatching, electrical source exchange is that series resistor runs, to ensure that electromagnetic valve flows down maintenance in low voltage and small electric and opens, avoid electromagnetic valve heating burnout.
Scm observe and control circuit: one is made up of AT2051 single-chip microcomputer, voltage comparator LM2903 and divider resistance Rp-R1-R2, as infrared absorption type concentration sensor signal Uc, when Longitude LM2903 makes comparisons, sets up the high, medium and low 3 grades of control signals of dust concentration; Another acoustoelectric signal circuit be made up of resistance-electret capacitance Mike gives AT2051 external interrupt request pin INT1 (P3.3), for train by, shot firing operation, equipment run time to sprinkle water triggering signal; Single-chip Controlling field-effect transistor IRF9639 On/Off power of electromagnetic valve, accomplishes Self-watering.
Automatic water system is realized by single-chip microcomputer-software programming, and dust concentration exports according to LM2903 and high, medium and low 3 grades of ， Ze Longitude software programming can be divided into can to sprinkle water respectively in cycle 5min 3min, 2min, 1min; When there being Us to trigger, watering 3min; Dust concentration classification regulates by Rp-R1-R2 and changes its thresholding, the adjustment of watering Shi Jian Ke Longitude software, this automatic water system can economize on water more than 60% than watering dust extinguishing device open in usual, than the watering device that controls by precision dust concentration use flexible, reliable, simple, cost is low.
Described intrinsic safe power circuit, infrared absorption type concentration sensor circuit, acoustoelectric signal circuit, power of electromagnetic valve circuit and microcontroller power supply-telemetry circuit are contained in an explosion-proof casing, implement device integration, and meet underground coal mine electrical equipment 6B3836 requirement.
Accompanying drawing explanation
Fig. 1 infrared absorption type monitors dust concentration, acoustoelectric signal drives automatic water system power supply-control circuit schematic diagram;
Fig. 2 infrared absorption type monitors dust concentration, acoustoelectric signal circuit theory diagrams;
Fig. 3 integrated explosion-proof housing is always schemed;
Fig. 4 Single-chip Controlling (flow chart, program).
Detailed description of the invention
This patent is the automatic water system with infrared absorption type monitors dust concentration, acoustoelectric signal triggers, and comprising:
Intrinsic safety electric source, for providing power supply for infrared absorption type monitoring sensor of dust concentration, acoustoelectric signal circuits for triggering; Infrared absorption type monitoring concentration circuit, be made up of infrared LED, photistor 3DU512D-transistor 9013, according to youth primary-Bel rule: 3DU512D series loop Δ I electric current and concentration c are inverse ratio, series loop voltage U c=Δ I*R can monitor dust concentration, produces dust concentration signal Uc; The acoustoelectric signal circuit be made up of resistance electret capacitance Mike, voltage comparator LM2903, produces acoustic-electric and touches signal Us; Electromagnetic valve electric power loop, for watering 2W-200-20 type electromagnetic valve provides power supply, according to electromagnetic valve work characteristics, electric power loop serial connection electromagnetic valve magnet excitation control loop: when starting to connect electromagnetic valve, power supply full voltage starts for electromagnetic valve, and when electromagnetic valve need maintain unlatching, electrical source exchange is that series resistor runs, to ensure that electromagnetic valve flows down maintenance in low voltage and small electric and opens, avoid electromagnetic valve heating burnout; Microcontroller power supply and observing and controlling loop, the telemetry circuit of AT2051-voltage comparator LM2903, resistor composition; This automatic water system is realized by single-chip microcomputer-software programming.Described Self-watering power supply, control circuit, infrared absorption type concentration monitor-acoustic-electric circuits for triggering, electromagnetic valve power circuit, in microcontroller power supply and observing and controlling loop Zhuan mono-Ma explosion-proof casing, forms integration in dress.
The technical problem that patent of the present invention need solve is:
1. select infrared absorption type to monitor dust concentration: the sensor of dust concentration observation circuit be made up of infrared LED, photistor 3D512D, transistor 9013, obtain dust concentration signal, dust concentration signal Uc can be obtained according to youth primary-Bel rule and concentration is inverse ratio; Resistance electret capacitance Mike is composed in series acoustic-electric Received signal strength circuit, and Mike's dividing potential drop increases with noise, compares after amplification obtain acoustoelectric signal Us through LM2903.
2. scm observe and control circuit: is made up of single-chip microcomputer, voltage comparator LM2903 and divider resistance Rp-R1-R2, as infrared absorption type concentration sensor signal Uc; when Longitude LM2903 makes comparisons, set up the high, medium and low 3 grades of control signals of dust concentration, to sprinkle water respectively 3min according to software, 2min, 1min; Another acoustoelectric signal circuit be made up of resistance-electret capacitance Mike, voltage comparator LM2903 gives AT2051 external interrupt request pin INT1 (P3.3), for train by, shot firing operation, equipment run time to sprinkle water triggering signal; Single-chip Controlling field-effect transistor IRF9639 On/Off power of electromagnetic valve, accomplishes Self-watering.Select single-chip microcomputer-software programming to monitor, when user Ke Yi actual conditions regulate Rp-R1-R1 to determine to sprinkle water, dust concentration thresholding, spills the Shui time by software adjustment, meets user's dust management expectancy.
3. select sensor electrical source circuit, meet the correlation technique regulation of GB38362010 Electric Equipment in Explosive Gas Atmosphere.
4. select current limliting constant voltage circuit to be connected in series electromagnetic valve control loop as 2W200-20 electromagnetic valve power supply, according to electromagnetic valve operation characteristic, and connect and encourage by force electromagnetic valve coil control circuit, make the reliable Open-closure of electromagnetic valve, run time long and can not generate heat, burn.
5. the monitoring of infrared absorption type dust concentration and acoustic-electric triggering signal, in intrinsic safety electric source, electromagnetic valve power supply, microcontroller power supply and monitoring loop Zhuan mono-Ma housing, this housing meets mine anti-explosion requirement, meets GB3836-2010 correlation technique regulation, is applicable to underground coal mine work.
Describe in detail below in conjunction with accompanying drawing.
1. Fig. 1 infrared absorption type monitors dust concentration, acoustoelectric signal drives automatic water system power supply-control circuit schematic diagram; In figure:
1). Self-watering power supply forms by every intrinsic safety electric source, microcontroller power supply-observing and controlling ring current and electromagnetic valve power supply three part.
2). power supply adopts power system in mines voltage AC127V grade, exports AC18V and AC25V, supply intrinsic safety electric source-single-chip microcomputer-observing and controlling ring current and electromagnetic valve electric power loop power supply respectively through transformer pressure-reducing.
3). intrinsic safe power circuit: by 2 grades of LM317 current limlitings; LM7815 three terminal regulator forms; 2 grades of overvoltage protection safety barriers of this circuit serial connection 2CW16V, R=0.2K and BT151 composition and 2 grades of short-circuit protection circuits of IRF630, optocoupler 2501 and resistance composition; circuit is exported and realizes Cut-off mode short circuit protection, meet GB3836-2010 and specify.The power circuit that electric power loop supplies single-chip microcomputer and observing and controlling loop is formed by 2 × LM317-LM7815-LM7805.
4). electromagnetic valve electric power loop: by 2 grades of LM1084 current limlitings, LM7824 three terminal regulator forms, for ensureing that electromagnetic valve works reliably and with long-term, what output loop connecing was made up of transistor BD242 and 9013 and resistance encourages by force electromagnetic valve power control loop, when electromagnetic valve starts conducting, power supply is with DC24V, In=1.0A powers to electromagnetic valve through DB242 transistor, after time delay 0.3s, due to 9013 conductings be connected in series with BD242 base stage B, make BD242 emitter junction voltage U bc<0.6V and end, stream power supply falls in DC24V electrical source exchange Dao Longitude 2 × 51 Ω/3W resistance to electromagnetic valve step-down, open to ensure that electromagnetic valve maintains.For ensureing DC24V loop not because fault overvoltage and output can control, 2 grades of overvoltage protection safety barriers of serial connection 2CW26V, R=0.2K and BT151 composition and 2 grades of controlled short-circuit protection circuits of IRF630, optocoupler 2501 and resistance composition; Single sheet machine Longitude optocoupler 2501-field-effect transistor IRF9630 can Controlling solenoid valve On/Off.
5). Single-chip Controlling loop: single chip computer AT 2051 is monitored: acoustoelectric signal delivers to INT1 (P3.3), exports when Us triggers INT1, AT2051 control loop, opens electromagnetic valve, watering 3min.Dust concentration signal Uc delivers to comparator LM2903, and with the voltage compare of Rp-R1-R2 resistor voltage divider circuit, the high, medium and low 3 grades of control signals of exportable dust concentration, sprinkle water 3min, 2min, 1min respectively.And by regulating Rp-R1-R2 resistance, dust concentration thresholding when user can determine watering, by the time of sprinkling water in software adjustment cycle, meets user's dust management expectancy, realize automatic water system simple, flexibly, low cost, water saving.
2. Fig. 2 infrared absorption type monitors dust concentration, acoustoelectric signal circuit theory diagrams; .
1). this circuit is made up of 2 parts: a road is infrared absorption type monitoring concentration circuit, and exporting with dust concentration is inverse ratio signal Uc; Another road exports acoustoelectric signal Us.
2). infrared absorption type concentration sensor circuit puts 9013 by infrared LED, photistor 3DU512D and transistor, resistance forms: 3DU512D output current and dust concentration are inverse ratio, compare amplification through LM9013, have and export with concentration associated voltage Uc signal.
3). acoustoelectric signal Us loop, be connected in series by resistance-electret capacitance Mike, Mike's dividing potential drop connects to form through resistance-capacitance and LM2903 comparator, and when the sound occurs, Mike's dividing potential drop raises-LM2903 and exports US as acoustoelectric signal.
3. the integrated explosion-proof casing of Fig. 3 is always schemed.
1). integrated explosion-proof housing adopts φ 127mm, wall thickness 3.5mm electrically welded tube is made, and structure meets GB3836-2010 correlation technique regulation, and Longitude country mining product Check and Inspection center is up to the standards, and meets explosion-proof performance.
2). explosion-proof casing is 2 cavity configurations, and epicoele meets explosion-proof performance, cavity of resorption meets intrinsically safe circuit electrical enclosure performance requirement, and cavity of resorption device has the PCB of infrared absorption type concentration sensor harmony electrical signal circuitry, makes it be integrally formed formula electric fixtures.
3). in accompanying drawing 3, explosion-proof casing mark implication be: 1-mounting knob 2-M24 loudspeaker chew and seat (AC127 feed cable introducing device) 3-M24 loudspeaker chew and seat (electromagnetic valve feed cable output device) 4-M6 bolt guard ring, 5 ~ 7-M6 hexagon socket head cap screw, M6 bullet pad, M6 plain cushion 8-housing upper end cover 9-housing explosion-proof flange 10-earth stud M6 11-epicoele pull cribbing 12-φ 127-3.5 electrically welded tube housing 13-M24 loudspeaker chew interval in (probe power output device) 14-φ 120-3 pull 15-end every pulling support 16-sensor PCB17-M4 support bracket bolt 18-φ 120-3 end cap
4. in Fig. 4, ATM2051 Single-chip Controlling block diagram and program.
The product " ZSB127-45 is mining automatic water system " produced according to the present invention are just sending national mining product to pick up and are surveying inspection center inspection.
Claims (3)
1., with the automatic water system that infrared absorption type monitors dust concentration, acoustoelectric signal triggers, it is characterized in that comprising:
Intrinsic safe power circuit, for infrared absorption type monitoring sensor of dust concentration and acoustic-electric circuits for triggering provide power supply;
Infrared absorption type monitoring sensor of dust concentration, be made up of infrared LED, photistor 3DU512D, transistor 9013,3DU512D output current and dust concentration are inverse ratio, and its output current forms concentration signal Uc after amplifying through 9013 in electric group of serial connection; Acoustoelectric signal is composed in series by resistance, electret capacitance Mike, and when after sound induction, serial connection Mike dividing potential drop raises, and exports acoustoelectric signal Us through voltage compare amplifier LM2903;
Watering power of electromagnetic valve circuit, for electromagnetic valve 2W-200-20 provides power supply, the output of the power of electromagnetic valve of DC24V, 1.2A constant voltage and current limiting in parallel by transistor BD242,9013, the electromagnetic valve coil magnet excitation circuit that forms of rc-delay circuit and 2 × 51 Ω/3W, when electromagnetic valve is opened, BD242 conducting, power supply with DC24V-1.2A to solenoid valve, after time delay 0.3s, BD242 ends, 2 × 51 Ω/3W resistance switching power supply to serial connection are powered to electromagnetic valve coil, maintenance electromagnetic valve is opened, and ensures electromagnetic valve not heating burnout;
Microcontroller power supply and telemetry circuit, microcontroller power supply provides power supply for single chip computer AT 2051 and telemetry circuit, dust concentration telemetry circuit is made up of voltage compare amplifier LM2903 and Rp-R1-R2 resistor voltage divider circuit, dust concentration signal Uc Longitude LM2903 compares with electric resistance partial pressure, dust concentration is divided into high, medium and low 3 grades, application scm software programming Control, implements the different watering time; Acoustic-electric triggering signal Us, triggers AT2051 and controls watering, and AT2051 Longitude field-effect transistor IRF9630 controls watering power of electromagnetic valve On/Off.
2. described in requiring according to right 1, automatic water system, is realized by single-chip microcomputer-software programming, and dust concentration exports according to LM2903 and high, medium and low 3 grades of ， Ze Longitude software programming can be divided into can to sprinkle water respectively in cycle 5min 3min, 2min, 1min; When there being Us to trigger, watering 3min; Dust concentration classification regulates by Rp-R1-R2 and changes its thresholding, the adjustment of watering Shi Jian Ke Longitude software, this automatic water system can economize on water more than 60% than watering dust extinguishing device open in usual, than the watering device that controls by precision dust concentration use flexible, reliable, simple, cost is low.
3. according to right 1 requirement, intrinsic safe power circuit, infrared absorption type concentration sensor circuit, acoustoelectric signal circuit, power of electromagnetic valve circuit and microcontroller power supply telemetry circuit are contained in an explosion-proof casing, structure is simple, and implement device integration, meets underground coal mine electrical equipment GB3836 requirement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410140325.XA CN104975866A (en) | 2014-04-10 | 2014-04-10 | Automatic watering device adopting infrared absorption type dust concentration detection and acoustoelectric signal triggering |
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| CN201410140325.XA CN104975866A (en) | 2014-04-10 | 2014-04-10 | Automatic watering device adopting infrared absorption type dust concentration detection and acoustoelectric signal triggering |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1352084A1 (en) * | 1986-05-06 | 1987-11-15 | Производственное Горнорудное Объединение "Уралруда" | Sprinkling unit |
| CN2170375Y (en) * | 1993-07-03 | 1994-06-29 | 陆泉 | Full-automatic timing sprayer for mine |
| CN101105140A (en) * | 2007-04-12 | 2008-01-16 | 山东科技大学 | Mine dust on-line monitoring and controlling system |
| CN201620910U (en) * | 2010-03-10 | 2010-11-03 | 南通友煜机械电子工业有限公司 | Anti-explosion automatic sprinkling device for mine |
| CN101915116A (en) * | 2010-07-16 | 2010-12-15 | 煤炭科学研究总院重庆研究院 | Intelligent dust concentration limit setting spray dust settling device, system and method |
| AU2011253890A1 (en) * | 2011-12-08 | 2013-06-27 | Jacobus Johan Dekker | Dust control system and device |
-
2014
- 2014-04-10 CN CN201410140325.XA patent/CN104975866A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1352084A1 (en) * | 1986-05-06 | 1987-11-15 | Производственное Горнорудное Объединение "Уралруда" | Sprinkling unit |
| CN2170375Y (en) * | 1993-07-03 | 1994-06-29 | 陆泉 | Full-automatic timing sprayer for mine |
| CN101105140A (en) * | 2007-04-12 | 2008-01-16 | 山东科技大学 | Mine dust on-line monitoring and controlling system |
| CN201620910U (en) * | 2010-03-10 | 2010-11-03 | 南通友煜机械电子工业有限公司 | Anti-explosion automatic sprinkling device for mine |
| CN101915116A (en) * | 2010-07-16 | 2010-12-15 | 煤炭科学研究总院重庆研究院 | Intelligent dust concentration limit setting spray dust settling device, system and method |
| AU2011253890A1 (en) * | 2011-12-08 | 2013-06-27 | Jacobus Johan Dekker | Dust control system and device |
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